We call this process speciation, which just means the formation of new species. Speciation is an unavoidable consequence and a very important part of evolution. Here is the same text in Swahili:
Tunauita mchakato huu speciation, ambalo linamanisha uundaji wa spishi mpya. Speciation ni matokeo yasiyoweza kuepukika na sehemu muhimu sana ya mageuzi.